WO1996000350A1

WO1996000350A1 - Horizontal scroll compressor

Info

Publication number: WO1996000350A1
Application number: PCT/JP1995/001233
Authority: WO
Inventors: Shigeki Hagiwara; Takekazu Obitani; Hiromichi Ueno; Shuichi Jomura
Original assignee: Daikin Industries, Ltd.
Priority date: 1994-06-24
Filing date: 1995-06-21
Publication date: 1996-01-04
Also published as: CN1079139C; EP0716231A4; KR100338267B1; JPH0814171A; US5683237A; ES2169136T3; TW289073B; AU2752795A; DE69524367T2; JP3884778B2; AU690288B2; DE69524367D1; EP0716231A1; EP0716231B1; CN1129967A; KR960703200A

Abstract

A horizontal scroll compressor wherein a tail end of a spiral body (2b) of a fixed scroll (2) is connected to a tail and side of a spiral body (3b) of a movable scroll (3) for extension, wherein suction ports (22, 23) of respective compression chambers (RA, RB) are located closer to each other by the extension of the spiral body (2b), while the suction ports (22, 23) are positioned at an upper portion of a sealed casing (1), wherein a suction passageway (24) is formed at an upper portion of a housing (4) dividing a compressing element chamber (12A) from a motor chamber (12b), whrein a position where a suction tube (11) is open deviates in a circumferential direction relative to the suction passageway (24), wherein the suction passageway (24) deviates in a circumferential direction relative to the suction ports (22, 23) of the compression chambers (RA, RB) and wherein the suction passageway (24) deviates forwardly of the movable scroll (3) in its revolving direction relative to the suction ports (22, 23).

Description

Bright Horizontal Compressor

C technical field]

The present invention relates to a horizontal scroll compressor, and more particularly, to a compressor in which a fixed scroll and a movable scroll each having a head plate and a spiral body are combined.

[Background technology 3

2. Description of the Related Art Conventionally, as a horizontal scroll compressor used for a refrigerating apparatus or the like, there is one disclosed in Japanese Patent Application Laid-Open No. 6-62674.

As shown in Fig. 5, this scroll-type compressor has a horizontal hermetic casing (C) with a compression element (E) on one side and a machine (M) on the other side, which is housed in the UK. ing. The above dffi reduction element (E) includes a fixed scroll (FS) and a movable scroll (OS) each having a scroll formed on the front surface of the end plate, and the fixed scroll (FS) and the movable scroll (OS) are provided. ) Spirals are interlocked.

The machine (M) is connected to the end plate of the movable scroll (OS) via the drive shaft (S). One end of the drive shaft (S) on the side of the compression element (E) is supported by a closed casing (C) via a first bearing housing (H), and the other end is a second bearing (not shown). It is supported by a closed casing (C) via a housing.

—On the other hand, a suction pipe (J) that opens into the internal space (A) between the compression element (E) and the machine (M) is connected to the closed casing (C).

The first housing (H) has a partition made of a flexible material such as rubber. The member (B) is provided to partition the suction side of the force compression element (E) and the internal space (A). Further, a suction A¾½ (D) force is formed in the upper part of the first $ receiving housing (H) so that the internal space (A) is on the suction side of the compression element (E).

In addition, on the back side of the fixed scroll (FS), a partition wall (F) for forming a discharge chamber (G) is provided. A discharge port (Ρ) formed in the end plate of the fixed scroll (FS) is opened to the discharge chamber (G), and a discharge pipe (<) force is communicated with the discharge chamber (G). The compression operation of the scroll compressor is as follows.

First, when the machine (Μ) is driven, the orbiting scroll (OS) performs only the driving without rotating on the fixed scroll (FS). Then, for example, the evaporator power of the refrigeration system, et back iSE gas refrigerant suction pipe into the interior space (A) of the closed Ke one single from (J) (C) "< » 0

The gas refrigerant passes through the internal space (A) and the suction path (D) to form a compression element (Ε), which is compressed by the compression element (Ε). Thereafter, the high-pressure gas refrigerant flows into the discharge chamber (G) through the compression element (Ε), the discharge port (Ρ), and is supplied to the condenser through the discharge pipe (Κ).

_ Solution issues-

In a conventional horizontal scroll compressor with ± έΕ, a 180-degree phase is set between the end of the spiral of the fixed scroll (FS) and the end of the spiral of the movable scroll (OS). There is a gap. For this reason, the suction ports of the two compression chambers formed between the scrolls of both scrolls (FS, OS) were also out of phase by 180 degrees.

As a result, in the conventional horizontal scurnole compressor, when the b of one compression chamber is positioned above the horizontal closed casing (C), the suction port of the other compression chamber is closed by the closed casing (C). It will be located at the bottom. On the other hand, in the refrigerating apparatus equipped with the horizontal scroll compressor, when the discharge gas refrigerant is supplied to the evaporator to perform the reverse cycle defrost operation, or after that, the operation is switched to the normal operation again, and the discharge gas refrigerant is changed to the normal operation. When flowing into the condenser, a large amount of liquid refrigerant may return from the evaporator to the closed casing (C).

At this time, as described above, since one suction port is located at the lower part of the closed casing (C), when the liquid refrigerant passes through the suction passage (D), the liquid refrigerant is sucked from the suction port into the compression chamber. Will be. As a result, there is a problem that shrinkage occurs and a compressor failure such as breakage of the spiral body occurs.

Also, when starting up from a prolonged stop state, the liquid coolant lubricated into the oil reservoir (Q) at the bottom of the closed casing (C) may cause homing of the dissolved liquid of the lubricating oil and the refrigerant. is there. When bubbles of the solution pass through the suction path (D) due to the homing, the bubbles are sucked into the compression chamber. As a result, there is a problem that a liquid pressure is caused by a solution of the lubricating oil and the refrigerant. Therefore, it is conceivable that each suction port is positioned at an intermediate portion in the vertical direction of the closed casing (C). Thus, the height of the suction port located at the lower portion can be located at the intermediate portion.

Some shrinkage can be prevented by the above means. The liquid refrigerant that has passed through the suction force, the force, and the suction λ5 (D) is directly sucked into each suction port of the suction passage (D). Therefore, there is a problem that liquid compression cannot be sufficiently solved. The present invention has been made in view of the above point, and prevents liquid compression even if there is a stagnation of a liquid refrigerant or a large amount of liquid return, causing a start failure due to liquid compression, breakage of a spiral body, etc. The purpose of the present invention is to solve the above problem with a simple configuration. c Disclosure of the Invention]

In order to achieve the above object, the means according to the first aspect of the present invention includes a horizontal closed casing (1) in which a compression element (E) is provided on one side and a reciter ( M) Power << That's what was delivered to the UR.

The above-mentioned compression element (E) is a fixed scroll (2) formed by a spiral body (2b, 3b) force << formed on the front surface of the head plate (2a, 3a), respectively! The scrolls (3) are constructed by combining the spiral bodies (2b, 3b) of the moving scroll (3), and a pair of compression chambers (RA, RB) are formed between the scrolls (2, 3).

On the other hand, the machine (M) is connected to the movable scroll (3) so as to revolve the movable scroll (3). Further, it is assumed that the horizontal scroll compressor has an intake pipe (11) opening between the compression element (E) and the compressor (M) in the internal space (12) of the closed casing (1).

The end of the spiral body (2b) in the fixed scroll (2) is connected to the movable scroll (3) so as to be close to the suction ports (22, 23) of the paired compression chambers (RA, RB). The two scrolls (2, 3) are extended so as to extend toward the end of the spiral of the spiral body (3b) and to be located at the upper part of the suction casing (1). .

Further, the internal space (12) has a housing (4) that partitions the internal space (12) into a compression element chamber (12A) and a machine room (12B). The suction pipe (11) is open to the force (12B).

In addition, at the upper part of the housing (4), a suction λ path (24) force is formed at the suction part (24, 23) that opens to the suction port (22, 23). An oil return passage (25) communicating with the element chamber (12A) and the ¾¾am (12B) and having a predetermined il resistance is provided. -In addition, the invention according to claim 2 <means taken in the invention of claim 1 The opening position of the pipe (11) to (12B) is shifted in the circumferential direction with respect to the suction AS passage (24) at the top of the housing). Further, the means according to the third aspect of the present invention is the invention according to the first or second aspect, wherein the suction λ channel (24) is connected to the suction ports (22, 23) of the paired compression chambers (RA, RB). ) Is formed at a position shifted in the circumferential direction with respect to. According to a fourth aspect of the present invention, in the third aspect of the present invention, the suction passage (24) is arranged such that the suction passage (24) is located in front of the suction port (22, 23) in the revolving direction of the movable scroll (3). It is formed at a position shifted to the side.

—Operation— With the above configuration, in the invention according to claim 1, the end of the spiral body (2b) of the fixed scroll (2) is extended, and the spiral body (2b) and the spiral body of the movable scroll (3) are extended. (3b) is asymmetric 狀. Then, the suction ports (22, 23) of the paired compression chambers (RA, RB) are brought close to each other, and these suction ports (22, 28) are arranged at the upper part of the closed casing (1). Further, the housing (4) separates the compression element chamber (12A) from which the suction ports (22, 23) open, and the suction pipe (11), which opens (12B), and the upper part of the housing (4). An oil return path (25) is provided in the housing (4), while an oil absorption path (24) is provided in the housing (4).

Then, for example, when the reverse cycle defrost operation is performed in the refrigeration apparatus or when the operation returns to the normal operation thereafter, the suction pipe (11) returns to the liquid casing and the liquid casing (1), and returns to the liquid casing. May enter the compression element chamber (12A). Also, at the time of startup, the solution of the lubricating oil and the refrigerant may be homed, and bubbles of the solution may enter the compression element chamber (12A) from the λ path (24) due to the homing. In this case, since the suction ports (22, 23) of each compression chamber (RA, RB) are located at the top, the liquid refrigerant / dissolved liquid flows from the suction ports (22, 23) to the compression chambers (RA, RB). There is no suction and liquid compression is suppressed.

In addition, since the oil is returned to the Sff compression element chamber (12 A) power and the recitation (12 B) reliably, the oil entrainment by the orbiting scroll (3) is suppressed.

Further, since the scrolls (2, 8) of the scrolls (2, 8) are made asymmetric, the outer diameter of the scroll (outer diameter of the end plate) can be suppressed, so that the liquid can be prevented from being compressed while reducing the size. , Improves reliability. Further, in the invention according to claim 2, since the opening position of the suction pipe (11) is shifted in the circumferential direction with respect to the suction λ channel (24), a case where a large amount of liquid refrigerant returns from the suction pipe (11). However, this liquid refrigerant is not sucked directly from the suction pipe (11) into the λ¾ path (24). As a result, the problem of liquid compression can be solved more reliably, and higher reliability can be obtained. Further, in the invention according to claim 3, since the suction path (24) is displaced in the circumferential direction with respect to the suction port (22, 23), when the liquid refrigerant enters the suction path (24), However, the liquid refrigerant does not scatter and is directly sucked into the suction ports (22, 23). As a result, the suction

(24) Forces, etc .: The 冷媒 flE shrinkage that occurs when the liquid refrigerant is sucked into the suction ports (22, 23) is prevented, and the problem of thigh shrinkage can be solved more reliably. Further, in the invention according to claim 4, the suction λ channel (24) is shifted forward with respect to the suction port (22, 23) in the revolving direction of the movable scroll (3), that is, the spiral body (3b ) Is shifted to the back of the end of the winding. For this reason, when the liquid refrigerant drawn into the compression element chamber (12 A) from the suction passage (24) is sucked into the suction ports (22, 23), the spiral body (bypassing the winding end of the 3W) is bypassed. As a result, the suction force is effective And the prevention of liquid compression is further improved. According to the invention of claim 1, the end of the spiral body (2b) of the fixed scroll (2) is extended, and the suction port (RA, B) of each compression chamber (RA, B) is extended. 22, 23) are placed close to and above the closed casing (1), while the suction port (22, 23) has a force << the open compression element chamber (12A) and the suction pipe (11) open. ® The λ channel (24) is provided in the upper part of the housing (4) that separates from the Ι ^ (12B), so that ffi-compression can be reliably prevented.

That is, for example, when the reverse cycle defrost operation is performed in the refrigerating apparatus, or when the operation returns to the normal operation thereafter, the suction pipe (11) force and many other liquid refrigerants return to the closed casing (1), and the liquid refrigerant May enter the compression element chamber (12A). Also, at the time of startup, the solution of the lubricating oil and the refrigerant may be homed, and bubbles of the solution may flow from the suction passage (24) to the compression element chamber (12A) due to the homing. In this case, since the suction ports (22, 23) of the compression chambers (RA, RB) are located at the upper part, the bubbles and the liquid refrigerant are compressed by the suction ports (22, 23). RA, RB) can be reliably prevented from being sucked into, and compression can be reliably prevented. Further, since the oil return passage (25) is provided in the housing (4), the force of the compression element chamber (12A) and the oil return force to the ¾¾ ^ (12B) can be ensured. In addition, oil can be reliably prevented from being generated by the orbiting scroll (3).

In addition, since the spiral body (2b) of the fixed scroll (2) and the spiral body (3b) of the orbiting scroll (3) are asymmetrical, the outer diameter of the scroll (outer diameter of the end plate) can be suppressed, so that a small In addition, it is possible to prevent thigh contraction when it is possible to increase the power; According to the second aspect of the present invention, since the opening position of the suction pipe (11) is shifted in the circumferential direction with respect to the suction passage (24), a large amount of liquid refrigerant returns from the suction pipe (11). Even in this case, it is possible to prevent the liquid refrigerant from being sucked directly from the suction pipe (11) into the suction passage (24). As a result, the problem of liquid compression can be more reliably solved, and the ability to obtain higher reliability can be achieved. According to the third aspect of the present invention, since the suction passage (24) is shifted in the circumferential direction with respect to the suction ports (22, 23), when the liquid refrigerant enters the suction passage (24), This can prevent the liquid refrigerant from scattering and being directly sucked into the suction ports (22, 23). As a result, it is possible to prevent the liquid refrigerant scattered from the suction λ channel (24) from being sucked into the suction ports (22, 23) and to prevent the compression from occurring, so that the problem of the liquid compression can be solved more reliably. Can be. According to the fourth aspect of the present invention, the suction λ path (24) is shifted to the front side in the revolving direction of the orbiting scroll (3) with respect to the suction force (24) with respect to the suction port (22, 23). The mouths (22, 23) are located on the back side of the end of the scroll in the scroll (3b) of the orbiting scroll (3). For this reason, when the liquid refrigerant which has entered the compression element chamber (12 A) due to the force of the suction Ail passage (24) is drawn into the suction ports (22, 23), the liquid refrigerant is swirled (3b) Can be bypassed. As a result, the suction can be more effectively prevented, and the prevention of liquid compression can be further improved.

[Brief description of drawings]

-Fig. 1 shows an embodiment of the present invention, and is a cross-sectional view of a fixed scroll and a scroll of a moving scroll, in which a part of a spiral body is cut away and a housing is viewed.

FIG. 2 is a longitudinal sectional view of the horizontal scroll compressor in which one part is omitted. FIG. 3 is a right side view showing only the housing.

FIG. 4 is a cross-sectional view of a main part of a horizontal scroll compressor showing another embodiment.

FIG. 5 is a vertical cross-sectional view of a conventional horizontal scroll compressor shown with one part omitted.

[Best Mode for Carrying Out the Invention]

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

-Structure of the compressor-As shown in Fig. 2, this horizontal scroll compressor is provided in the refrigerant circuit of the refrigeration system, and is compressed on one side of a horizontally long sealed casing (1). Element (E) force <stored, and on the other side, machine (M) force <stored.

The compression element (E) is composed of a fixed scroll (2) formed by a spiral body (2b) on the front surface of the head plate (2a) and a spiral body (3b) force formed on the front surface of the head plate (3a). It consists of a movable scroll (3), and the spiral body (2b) of the fixed scroll (2) and the spiral body (3b) of the movable scroll (3) are engaged with each other.

The dedicated shaft (5) is strongly connected to the electric motor (M), and is connected to the movable scroll (3) so as to revolve the dedicated shaft (5) <the movable scroll (3). One end of the drive shaft (5) is supported via a bearing (6a) on a housing (4) which is close to the compression element (E) and is fixed to the closed casing (1). Although not shown, it is supported by a closed casing (1) via a bearing housing.

An eccentric shaft (7) force is formed at one end of the driving mechanism (5), and the eccentric fisting mechanism (7) protrudes from the rear side of the end plate (3a) in the movable scroll (3). It is inserted into a cylindrical shaft member (8) as a bearing (6b).

An Oldham ring (9) for preventing rotation is provided between the end plate (3a) of the orbiting scroll (3) and the housing (4). When the motor (M) is driven to rotate the drive motor (5), the movable scroll (3) performs only a revolving motion without rotating on the fixed scroll (2). By this orbital motion, a first compression chamber (RA) and a second compression chamber (RB) are formed between the spiral bodies (2b, 3b). The refrigerant is compressed by the volume shrinkage of the compression chambers (RA, RB), and the refrigerant is discharged from a discharge port (10) formed at the center of the end plate (2a) of the fixed scroll (2).

On the other hand, a suction pipe (11) for introducing refrigerant is opened between the compression element (E) and the electric motor (M) in the internal space (12) of the closed casing (1).

On the back of the end plate (2a) of the fixed scroll (2), a partition plate (13) fixed to the closed casing (1) is provided. The partition plate (13) defines a discharge chamber (14) behind the end plate (2a) of the fixed scroll (2). A discharge port (10) is opened to the discharge chamber (14) via a discharge valve device (15) provided on a partition plate (13), and the discharge pipe (16) has a force <communication. .

The partition plate (13) is provided with a demister (17) for collecting lubricating oil, while the lubricating oil in the discharge chamber (U) is electrically driven by a capillar (18). Will be recovered.

Further, the partition plate (13) is provided on a gas shielding portion (19) body, and a capillary guide (20) is provided at an end of the capillary (18) while the sealing casing is provided. The ring (1) is supported on the installation surface (GL) in an oblique manner by the mounting legs (21). In the horizontal scroll compressor described above, the feature of the present invention resides first in the spiral body (2b) of the fixed scroll (2) as shown in FIG. That is, the winding end of the spiral body (2b) in the fixed scroll (2) is approximately 180 ° from the winding end to the part of the scroll (3W) in the movable scroll (3) that faces the winding end. It has been extended. The suction ports (22, 23) of the two compression chambers (RA, RB) formed between the scrolls (2, 3) by extending the spiral body (3b) are brought close to each other. Further, as shown in FIG. 1, both scrolls (2, 3) are arranged so as to be located at the upper part of the suction casing (1).

On the other hand, the housing (4) provided between the compression element (E) and the machine (M) is provided with a suction element (12, 23), a compression element chamber (12A) that opens strongly, and a suction pipe (11). ) The inner space (12) is divided into the power (《B) and the opening (22, 23) at the suction part of the compression element chamber (12A). In the upper part of the housing (4), a suction passage (24) communicating with the suction part of the compression element chamber (12A) is formed, and in the housing (4), the compression element chamber (12A) and the electric ( 12B) and a predetermined oil resistance in the oil return passage (25). More specifically, the inner wall surface of the extension of the fixed scroll (2), which extends the end of the scroll (2b) to the end of the scroll (3b) of the orbiting scroll (3), has another portion. Are formed in the same symbolic curve or an approximate curve thereof.

Further, by extending the spiral body (2b), the first compression formed by the inner wall surface of the spiral body (2b) of the fixed scroll (2) and the outer wall surface of the spiral body (3b) of the movable scroll (3). The suction volume of the chamber (RA) is determined by the second compression chamber (RB) formed by the outer wall of the scroll (2b) of the fixed scroll (2) and the inner wall of the scroll (3b) of the movable scroll (3). ) Suction volume.

Therefore, the compression ratio of the first compression chamber (RA) and the compression ratio of the second compression chamber (B) are different. Therefore, the discharge start angle of the first compression chamber (RA) is set to the second compression chamber (RB) at the winding start end of the spiral body (2b, 3b) of the movable scroll (3) or the fixed scroll (2). Adjustment to make the compression ratio of both compression chambers (RA, RB) the same earlier than the discharge start angle of Notch is formed. As shown in FIG. 1, the housing (4) is formed with a circular outer peripheral surface facing the inner peripheral surface of the closed casing (1), and the upper portion of the housing (4) is cut out over a predetermined range. Absorption λϋ path (24) Force << formed. Further, the outer peripheral surface of the housing (4) is formed so as to have a small gap (a) force between the outer peripheral surface and the inner peripheral surface of the closed casing (1). For example, the slight clearance (a) is set to 2_Rei ^ 111~30 _/ £ _/ ₁ 11, the oil return passageway (25) force between the housing (4) and closed casing (1) <been formed .

That is, the housing (4) has an outer diameter slightly smaller than the inner diameter of the closed casing (1), and is loosely fitted to the closed casing (1). As shown in FIG. 3, a plurality of welding pins (26) are embedded in the outer periphery of the housing (4), while a portion facing the welding pin (26) is welded to the closed casing (1). A hole is formed. The housing (4) is fixed by welding with a small gap (a) in the closed casing (1), and the oil return passage (25) is formed by the small gap). The oil return passage (25) is a thrust bearing that supports the oil supply passage (27) formed in the exclusive service (5), the bearing (6a, 6b) and the end plate (3a) of the movable scroll (3). This is a narrow passage for returning the lubricating oil supplied to the surface from the compression element chamber (12A) to (12B). Specifically, the housing (4) has a recess (28) in which the shaft member (8) is located, and the oil return passage (25) has a recess (28).

This is a passage for returning lubricating oil to (i2B).

The oil return passage (25) prevents the oil reservoir (29) formed at the bottom of the (12B) from flowing back into the lubricating oil or the liquid refrigerant, and at the same time, the lubricating oil flows into the recess (28). Prevents the accumulation of force << oil II ^ force <due to the movable scroll (3). When the oil return passage (25) is formed by a small gap (a) between the closed casing (1) and the housing (4), the housing (4) is sealed by welding using a welding pin (26). Since it can be fixed to the casing (1), it can easily center the drive fist (5). Therefore, it is advantageous in that the oil return passage (25) can be formed and the drive vehicle (5) can be easily centered.

As another embodiment of the oil return passage (25), as shown in FIG. 4, it may be constituted by a communication small hole (b), and although not shown, it may be formed by a notch. Further, the above-mentioned small gap (a) and the communication small hole (b) may be used in combination. The suction passage (24) may be provided in the upper part of the closed casing (1) in accordance with the opening position of the suction ports (22, 23) arranged in the upper part of the closed casing (1). I prefer to shift it, In particular, as shown in FIG. 1, the movable scroll (3) closes the intake ports (22, 23) in the revolving direction, ie, the intake ports (22, 23). ) Is preferable.

Further, the suction pipe (11) is opened at the upper part of the electric motor (12B), and the position of this opening is preferably less than the force of shifting the suction passage (24) in the circumferential direction.

—Operation of horizontal scroll compressor

Next, the operation of the horizontal scroll compressor will be described.

First, if m (M) is used exclusively, the movable scroll (3) performs only public vehicle movement without rotating on the fixed scroll (2). Then, the refrigerant returning from the cold evaporator flows into the closed casing (1) (12B) from the suction pipe (11). This refrigerant flows from (1 2 B) through the suction λ channel (24), flows into the compression element chamber (1 2 A), and enters each compression chamber (RA, RB) from the suction port (22, 23). Compressed. Thereafter, the high-pressure refrigerant flows out of each compression chamber (RA, RB) through the discharge port (11) to the discharge chamber (14), and is supplied to the condenser through the discharge pipe (16). As described above, the refrigerant flows into the compression chambers (RA, B) from the suction ports (22, 23). At this time, the scrolls (2b, 3b) of the fixed scroll (2) and the moving scroll (3) are asymmetric, the two suction ports (22, 23) are brought close to each other, and the closed casing (1) is used. ), It is possible to suppress the liquid refrigerant from being drawn in from the inlets (22, 23) while miniaturizing, which is one of the advantages of the asymmetric swirl type. That is, at the time of start-up, there may be a case where the liquid refrigerant that has stagnated during the stoppage causes the dissolved liquid of the lubricating oil and the refrigerant in the motor chamber (12B) to home. In addition, when the reverse cycle differential operation is performed, a large amount of liquid refrigerant may return. Furthermore, when the operation returns to the normal operation thereafter, a large amount of the liquid refrigerant may return to (12B) via the suction pipe (11) from the evaporator that supplied the gas refrigerant during the defrost operation.

In this case, bubbles and liquid refrigerant of the dissolved liquid are discharged from the inlets (22, 23) 5 times, but as shown in Fig. 1, both the inlets (22, 23) are closed casing U). Since it is located at the upper part, the bubbles of the dissolved liquid and the liquid refrigerant are prevented from being sucked from the inlets (22, 23). In addition, the position of the opening of the suction pipe (11) to the motor chamber (1 2b) is shifted in the circumferential direction with respect to the suction passage (24), and the suction passage (24) is further connected to the suction ports (22, 23). ) In the circumferential direction. For this reason, as shown by the dotted arrows in FIG. 1, the refrigerant including the liquid refrigerant that has been turned into electric power (12B) from the suction pipe (11) first becomes dense in the machine room (12B). It flows circumferentially along the inner peripheral surface of the closed casing (1). After that, the refrigerant enters the compression element chamber (12 A) as shown by the solid arrow in the Ail path (24), and then changes the flow direction to the direction of the suction ports (22, 23). Will flow to

The liquid refrigerant is separated from the refrigerant in the process of flowing into the suction ports (22, 23) through the suction pipe (11) and the suction λ path (24), and the fiber refrigerant is directly The force of being sucked into the suction ports (22, 23) is prevented. As a result, the gasified refrigerant is filled in the suction ports (22, 23), and therefore, the liquid compression due to the suction of the liquid refrigerant can be reliably prevented. Further, the lubricating oil supplied to the bearings (6a, 6b) and the thrust receiving surface returns to the electric motor (1 2B) through the oil return passage (25), and thus lubricates the concave portion (28) of the housing (4). Oil accumulation is prevented. As a result, oil agitation by the orbiting scroll (3) can be prevented, and the amount of rising oil can be reduced. Further, it is possible to prevent the liquid refrigerant and the lubricating oil from flowing backward from the oil reservoir (29).

Also, since only the housing (4) is provided with the absorption λ path (24), the rigidity can be improved, and the force applied to the housing (4) can reduce the distortion on the thrust receiving surface. Can be improved. One other modification—

In the case of the HJ® with ± ^, a force that forms two compression chambers (RA, RB) between the two scrolls (2, 3), forms two or more pairs of compression chambers You may do so. In short, the present invention only needs to be located above the suction rocker of each compression chamber to be formed. In the above embodiment, the case where the present invention is applied to a refrigeration apparatus has been described. Of course, it can be applied to various devices other than the refrigeration device.

[Industrial applications]

As described above, the horizontal scroll compressor according to the present invention is useful as a compressor such as a refrigerating device, and is particularly suitable for a device that may tear with liquid fluid power.

6 one

Claims

The scope of the claims

1. The horizontal sealed casing (1) has a compression element (E) on one side and a motor (M) on the other side.

The above-mentioned compression element (E) is composed of a fixed scroll (2) and a movable scroll (3), each of which is formed by a spiral body (2b, 3b) and a movable scroll (3) on the front surface of the head plate (2a, 3a). 3b), and a pair of compression chambers (RA, RB) forces are formed between the two scrolls (2, 3).

The electric motor (M) is connected to the orbiting scroll (3) so as to revolve the orbiting scroll (3),

In the horizontal scroll compressor, the suction pipe (11) is open between the compression element (E) and the electric motor (M) in the internal space (12) of the closed casing (1).

In the movable scroll (3), the end of the spiral body (2b) in the fixed scroll (2) is close to the suction ports (22, 23) of the paired compression chambers (RA, RB). To the end of the spiral of the spiral body (3b),

While the two scrolls (2, 3) are arranged so as to be located above the suction port (22, 23) force sealing casing (1),

In the internal space (12), a housing (4) that partitions the internal space (12) into a compression element chamber (12A) and a motor chamber (12B) (between the compression element (E) and the motor (M)). The suction pipe (11) is opened to the power electric wake (12B),

In the upper part of the housing (4), a suction passage (24) communicating with a suction portion having a suction port (22, 23) is formed.

The housing U) is provided with an oil return passage (25) that communicates with the compression element chamber (12A) and the electric motor M (12B) and has a predetermined ul resistance.

Horizontal scroll compression characterized by the following:

2. The horizontal scroll compressor according to claim 1,

The opening position of the suction pipe (11) to the motorized (1 2 B) is shifted in the circumferential direction with respect to the suction air passage (24) at the upper part of the housing (4).

Horizontal scroll compression characterized by the following:

3. The horizontal scroll compressor according to claim 1 or 2,

The suction passage (24) is formed at a position circumferentially displaced from the suction ports (22, 23) of the two compression chambers (RA, RB).

A horizontal scroll compressor, characterized in that:

4. The horizontal scroll compressor according to claim 3,

The suction passage (24) is formed at a position displaced from the suction port (22, 23) forward of the orbiting direction of the orbiting scroll (3).

Horizontal scroll compression characterized by the following:

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